21637328

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{79549}}^1$

素因数の和:79574

約数の個数: 20

約数和(自身を含む): 44388900

約数和(自身を除く): 22751572

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 79549, 159098, 318196, 636392, 1272784, 1352333, 2704666, 5409332, 10818664, 21637328]

約数ペア:

[(1, 21637328), (2, 10818664), (4, 5409332), (8, 2704666), (16, 1352333), (17, 1272784), (34, 636392), (68, 318196), (136, 159098), (272, 79549)]